77777440

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{613}}^1$

素因数の和:702

約数の個数: 96

約数和(自身を含む): 201455856

約数和(自身を除く): 123678416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 61, 65, 80, 104, 122, 130, 160, 208, 244, 260, 305, 416, 488, 520, 610, 613, 793, 976, 1040, 1220, 1226, 1586, 1952, 2080, 2440, 2452, 3065, 3172, 3965, 4880, 4904, 6130, 6344, 7930, 7969, 9760, 9808, 12260, 12688, 15860, 15938, 19616, 24520, 25376, 31720, 31876, 37393, 39845, 49040, 63440, 63752, 74786, 79690, 98080, 126880, 127504, 149572, 159380, 186965, 255008, 299144, 318760, 373930, 486109, 598288, 637520, 747860, 972218, 1196576, 1275040, 1495720, 1944436, 2430545, 2991440, 3888872, 4861090, 5982880, 7777744, 9722180, 15555488, 19444360, 38888720, 77777440]

約数ペア:

[(1, 77777440), (2, 38888720), (4, 19444360), (5, 15555488), (8, 9722180), (10, 7777744), (13, 5982880), (16, 4861090), (20, 3888872), (26, 2991440), (32, 2430545), (40, 1944436), (52, 1495720), (61, 1275040), (65, 1196576), (80, 972218), (104, 747860), (122, 637520), (130, 598288), (160, 486109), (208, 373930), (244, 318760), (260, 299144), (305, 255008), (416, 186965), (488, 159380), (520, 149572), (610, 127504), (613, 126880), (793, 98080), (976, 79690), (1040, 74786), (1220, 63752), (1226, 63440), (1586, 49040), (1952, 39845), (2080, 37393), (2440, 31876), (2452, 31720), (3065, 25376), (3172, 24520), (3965, 19616), (4880, 15938), (4904, 15860), (6130, 12688), (6344, 12260), (7930, 9808), (7969, 9760)]